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N NERVOUS SYSTEMN02 ANALGESICS
N02A OPIOIDS
N02AA Natural opium alkaloids
N02AB Phenylpiperidine derivatives
N02AC Diphenylpropylamine derivatives
N02AD Benzomorphan derivatives
N02AE Oripavine derivatives
N02AF Morphinan derivatives
N02AG Opioids in combination with antispasmodics
N02AJ Opioids in combination with non-opioid analgesics
N02AX Other opioids
Last updated: 2024-01-26